1489847993 has 8 divisors (see below), whose sum is σ = 1501060800. Its totient is φ = 1478653200.

The previous prime is 1489847987. The next prime is 1489848067. The reversal of 1489847993 is 3997489841.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1489847993 is a prime.

It is a super-2 number, since 2×1489847993² = 4439294084492256098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1489847393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193583 + ... + 201131.

It is an arithmetic number, because the mean of its divisors is an integer number (187632600).

Almost surely, 2^1489847993 is an apocalyptic number.

It is an amenable number.

1489847993 is a deficient number, since it is larger than the sum of its proper divisors (11212807).

1489847993 is a wasteful number, since it uses less digits than its factorization.

1489847993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9007.

The product of its digits is 15676416, while the sum is 62.

The square root of 1489847993 is about 38598.5491048563. The cubic root of 1489847993 is about 1142.1259173637.

The spelling of 1489847993 in words is "one billion, four hundred eighty-nine million, eight hundred forty-seven thousand, nine hundred ninety-three".